Hard plastic casing with fuel gauge and 5 slit-type contacts on end of step.Dimensions 5.29 x 3.71 x 0.77Weight: 0.9 lbs.Also fits the HP Pavilion NX series, HP Pavilion ZE4300-ZE5185, Presario 2100, Presario 2100 Series, Presario 2100AP, Presario 2100CA, Presario 2100LA, Presario 2100US , Presario 2101AP, Presario 2101US, Presario 2102AP, Presario 2102EA, Presario 2102US, Presario 2103AP , Presario 2103EA, Presario 2104AP, Presario 2105AP, Presario 2105CA, Presario 2105EA, Presario 2105LA , Presario 2105US, Presario 2106AP, Presario 2106EA, Presario 2106US, Presario 2107AP, Presario 2107EA , Business Notebook NX9040,Pavilion ZE4901US,Pavilion ZE4904US,Pavilion ZE4906US ,Pavilion ZE4907,Pavilion ZE4908US,Pavilion ZE4910CA ,Pavilion ZE4910US,Pavilion ZE4911US,Pavilion ZE4947 ,Business Notebook NX9020, Business Notebook NX9030,Business Notebook N1050V, Business Notebook NX9000,Business Notebook NX9005,Business Notebook NX9010,OmniBook XE 4400,Pavilion XT series ,Pavilion XT276,Pavilion XT375,Pavilion XT412,Pavilion XT4345QV,Pavilion XT5300 ,Pavilion XT5366WM, Pavilion XT537QV,Pavilion XT545 ,Pavilion XT5477WM,Pavilion XT595,Pavilion ZE4000 series, Pavilion ZE4100,Pavilion ZE4100 series,Pavilion ZE4115,Pavilion ZE4125,Pavilion ZE4145,Pavilion ZE4200 series, Pavilion ZE4220 ,Pavilion ZE4230 ,Pavilion ZE4236,Pavilion ZE4300,Pavilion ZE4300 series,Pavilion ZE4315CA,Pavilion ZE4315US,Pavilion ZE4325CA,Pavilion ZE4325US,Pavilion ZE4335US,Pavilion ZE4365US ,Pavilion ZE4400,Pavilion ZE4400 Series,Pavilion ZE4401,Pavilion ZE4402,Pavilion ZE4420,Pavilion ZE4427,Pavilion ZE4430,Pavilion ZE4455EA,Pavilion ZE4465,Pavilion ZE4610US,Pavilion ZE4630US ,Pavilion ZE4805US,Pavilion ZE5000,Pavilion ZE5000 series,Pavilion ZE5155,Pavilion ZE5165,Pavilion ZE5170 ,Pavilion ZE5185,Pavilion ZE5200 ,Pavilion ZE5279,Pavilion ZE5300,Pavilion ZE5366,Pavilion ZE5375US,Pavilion ZE5385US ,Pavilion ZE5395US , Pavilion ZE5478CL,Pavilion ZE5490US,Pavilion ZE5602,Pavilion ZE5604RS,Pavilion ZE5607WM,Pavilion ZE5615SR,Pavilion ZE5620US,Pavilion ZE5630US , OmniBook XE 4100, OmniBook XE 4500, Pavilion XT 118, Pavilion XT 155, Pavilion XT 236, Pavilion ZE 4210, Pavilion ZE 4240, Pavilion ZE4218, Pavilion ZE4228, Pavilion ZE4232S, Pavilion ZE4239, Pavilion ZE4268, Pavilion ZE4284, Pavilion ZE4288, Pavilion ZE4294, Pavilion ZE4298, Pavilion ZE5270,Pavilion ZE4510, Pavilion ZE4540US, Pavilion ZE4547, Pavilion ZE4560US, Pavilion ZE5475CA, Pavilion ZE5475F, Pavilion ZE5560, Pavilion ZE5570US, Pavilion ZE5700, Pavilion ZE5738RS ,Presario 2100, Presario 2155, Presario 2500,Presario 2108EA, Presario 2109EA, Presario 2110AP, Presario 2110CA, Presario 2110EA, Presario 2110LA , Presario 2110US, Presario 2111AP, Presario 2111EA, Presario 2112AP, Presario 2112EA, Presario 2113AP , Presario 2114AP, Presario 2114EA, Presario 2115AP, Presario 2115EA, Presario 2116AP, Presario 2117AP , Presario 2117EA, Presario 2118AD, Presario 2118EA, Presario 2119EA, Presario 2120AD, Presario 2120AP , Presario 2120EA, Presario 2120LA, Presario 2122AD, Presario 2123AD, Presario 2123AP, Presario 2124AD , Presario 2124AP, Presario 2125AC, Presario 2125AD, Presario 2125AP, Presario 2125EA, Presario 2126AC , Presario 2126AD, Presario 2126EA, Presario 2127AC, Presario 2127AD, Presario 2127EA, Presario 2128AC , Presario 2128AD, Presario 2128EA, Presario 2129AD, Presario 2129EA, Presario 2130AC, Presario 2130AD , Presario 2130AP, Presario 2130EA, Presario 2131AC, Presario 2131AD, Presario 2131EA, Presario 2132AC , Presario 2132RS, Presario 2133AC, Presario 2133AD, Presario 2133AP, Presario 2133EA, Presario 2134AD , Presario 2134EA, Presario 2135AC, Presario 2135AD, Presario 2135AP, Presario 2135CA, Presario 2135EA , Presario 2135US, Presario 2136AC, Presario 2136AD, Presario 2136EA, Presario 2136RSH, Presario 2137AC ,Presario 2137AD, Presario 2137EA, Presario 2138AC, Presario 2138AD, Presario 2138EA, Presario 2139AC , Presario 2139AD, Presario 2140AC, Presario 2140AD, Presario 2140AP, Presario 2140CA, Presario 2140US , Presario 2141AC, Presario 2141AD, Presario 2141EA, Presario 2142EA, Presario 2143AD, Presario 2143AP , Presario 2144AD, Presario 2144EA, Presario 2145AD, Presario 2145AP, Presario 2145CA, Presario 2145EA ,Presario 2145US, Presario 2146AD, Presario 2146EA, Presario 2147AD, Presario 2147EA, Presario 2148AD , Presario 2148EA, Presario 2149AD, Presario 2149EA, Presario 2150AP, Presario 2150US, Presario 2151AD , Presario 2151EA, Presario 2153AP, Presario 2154AP, Presario 2154EA, Presario 2155, Presario 2155EA , Presario 2155US, Presario 2156EA, Presario 2158EA, Presario 2160EA, Presario 2161EA, Presario 2161US , Presario 2162EA, Presario 2162US, Presario 2163EA, Presario 2164EA, Presario 2165EA, Presario 2166EA , Presario 2167EA, Presario 2169EA, Presario 2170US, Presario 2172EA, Presario 2173EA, Presario 2175EA , Presario 2175US, Presario 2500, Presario 2500 Series, Presario 2500AP, Presario 2500LA, Presario 2505AP , Presario 2510AP, Presario 2510EA, Presario 2510LA, Presario 2511EA, Presario 2512EA, Presario 2515AP , Presario 2515EA, Presario 2516EA, Presario 2520AP, Presario 2520EA, Presario 2521EA, Presario 2525AP , Presario 2525CA, Presario 2525EA, Presario 2525US, Presario 2526EA, Presario 2528CL, Presario 2530AP , Presario 2535AP, Presario 2535QV, Presario 2538CL, Presario 2540, Presario 2540AP, Presario 2545AP , Presario 2545US, Presario 2550AP, Presario 2555AP, Presario 2555US, Presario 2560AP, Presario 2565AP , Business Notebook N1050V, Business Notebook NX9000, Business Notebook NX9000 Series, Business Notebook NX9005, Business Notebook NX9010, Business Notebook Nx9905 , Presario 2108US, Presario 2188CL, Presario 2190US, Presario 2195US, NX9010, Presario 2199US, Presario 2204US, Presario 2210CA, Presario 2210US, Presario 2186RS, Presario 2529CL, Presario 2585US, Presario 2590US, Presario 2594US, Presario 2596US, Presario 2597US, Presario 2598US, Presario 2195, Presario 2580US,